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On the Bang & Olufsen website it is stated that the beo4 operates at 455 kHz for Bang & Olufsen products and 20-80 kHz for third party non-A/V product control http://www.bang-olufsen.com/en-US/picture/beo4. Does anyone know if the is only for the newest Beo4 mk4 model or also for older Beo4 models. e.g. Does a Beo4 mk1 also operate at 20-80 kHz? And how about older Beolink models?
To my knowledge, all B&O IR remotes operate art 455 Khz, expet some of the remotes dedicated to some systems (not compatible with other products)
All Beo4 and Link 1000 is 455 Khz.
As stated in my startpost. Bang & Olufsen themselfs report differently. I even think that Bosscom is using this operate their pcb boards for the Beo4 http://eu.bosscom.com/product.asp?id=1091. It could be off course that B&O is wrong and that the lower frequentions are only applicable for Beo5 and 6.
I want to know If I am able to receive the B&O signals on a IR receiver and translate them to other IR signals. However it is hard to get a 455 Khz receiver. It would be nice if a normal IR receiver will do the same thing.
Hi,
B&O used 455 KHz as carrier frequency at least since Beolink 1000, every remote afterwards used it also. Only with Beo 5 and 6 you can send with a lower freq.
To receive the 455 KHz you can try to get a TSOP7000 (Standard package like other receiver chips) or the TSOP5700 which is the SMD version. Both are capable of receiving the 455 KHz IR signal, demodulate it and give the transferred information at its output.
Another possible solution is an old MCL Tranceiver which also receives 455 KHz or the VX IR sensor (rare).
What do you need the IR receiver for?
Ralph-Marcus
RaMaBo is correct - I'll just add that this confusion stems from the B&O marketing material that essentially means that you can control other devices with a Beo4 via Masterlink Gateway (MLGW).
It definitely does not send at other carrier frequencies than 455 kHz and doesn't have any kind of programmability (in the sense that you could use it to control other devices than B&O directly).
TSOP7000 (and I presume the SMD version as well) have been discontinued for a while now, and it might be difficult to find them anywhere. I suppose this is the reason that Lintronic, for example, doesn't have built-in 455 kHz receivers in their latest versions.
--mika
Thanks for your replies. It seems that the B&O website is wrong then. I would like to operate my Samsung TV with a B&O remote. I was thinking of building something like a Lintronic based on an Arduino board. Indeed the Tsop7000, Tsop5700 and Tsop98200 are no longer available. I am wondering then how Lintronic and B&O themselfs are receiving the 455KHz signals.
I still have the electronics of a MX7000. Is it possible to use the IR receiver from this TV? Or is it possible to use the http://www.soundsheavenly.co.uk/bando-tvir.htm from Steve?
Search for linvis oneremote...
Ralf
Living Room: Beosystem 4, Beolab 7-2 (Center), Beolab 9 (Fronts), Beolab 8000 (Rears), no Subwoofer. Screen: Sony KD-85XH9096Dining Room: Beosound Essence MK II with Beolab 4000 on stands, fed by Amazon Echo Show 8Home Cinema: Beosystem 4, Beolab 7-4 (Center), Beolab 1 (Fronts), Beolab 4000 (Rears). Projector: Sony VPL-HW55Home Office: Beosystem 3, Beolab 7-4, Beolab 5000, Screen: Sony KD-55XH9005 on Beovision 7-40 stand, ML to Beosound 9000 MK3 and Beosound 5/Beomaster 5 (1 TB SSD version)Bedroom: Sony KD-65XH9077, Beosound Essence MK II with Beolab 6002 and Beolab 11 (all white, wall-mounted)
In storage: Beolab 5000/Beomaster 5000 (1960s).
Beo site is definitely wrong. I think, they just copied the Beo6 text to Beo4 site....(?)
I`t recommend a Lintronic box 5.x with builtin IR receiver to control your Samsung TV, works nice.
2nd option is modify your Beo4 with a oneremote board.
http://shop.oneremote.dk/catalog/index.php?cPath=1
you can use IR receivers from old LX, MX TVs and MCL transcievers.
Or buy an IR receiver directly from B&O. There are also oneremote products that use 455 kHz receivers.
Stefan
pacificocean:I still have the electronics of a MX7000. Is it possible to use the IR receiver from this TV?
From a quick glance that seems quite difficult; the IR receiver front end is on the transceiver board at the front corner of the TV, while the demodulator is on the CPU board which is quite large. You might be better off buying a transceiver from fleaBay.
The B&O receivers - built from a good handful of discrete components - are actually quite a bit more sensitive than the TSOP7000 single chip solution was . Lintronic currently seems to use the newr B&O "hockey puck" transceiver.
I now have a MCL transceiver from an xtra speaker kit http://www.beoworld.org/prod_details.asp?pid=974 However in the manual it is not described which wire color is used for which signal. Also on http://www.beoworld.org/beotech/wiring3.htm are only the wire colors mentioned. Does anyone know which wire color is used for which signal?
I think this is correct:
Ground - Brown
+ 5v - Green
IR Data - Yellow
Serial Data - White
Serial Clock - Grey
Thanks Guy, where did you get this information from?
I worked these out by looking at circuit diagrams of various B&O kit (the IR input stage) when trying to modify a VX sensor for use as a ML sensor - it worked with the listed colours.
The Brown, Green, Yellow are definitely right - they worked for me. I am not totally sure where I found the other two!!
... also I think that at least Ground (Brown), +5v (Green) and Serial Data (White) are labelled alongside the terminal strip inside the MCL2A and MCL2AV boxes. There's only the colours labelled for Grey and Yellow.
Thanks again. However I do not have the MCLAV box. So I am not able to verify this.
Green: +5V
Brown: Ground
White: Data
Yellow: Mute
Grey: Whether it responds to audio or TV commands
/ Johan
Now it is getting interesting with different answers for the yellow.
I also found this info.